1 /*
2 **
3 ** Copyright (C) 2008 The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 ** http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18 //#define LOG_NDEBUG 0
19 #define LOG_TAG "MetadataRetrieverClient"
20 #include <utils/Log.h>
21
22 #include <sys/types.h>
23 #include <sys/stat.h>
24 #include <dirent.h>
25 #include <unistd.h>
26
27 #include <string.h>
28 #include <cutils/atomic.h>
29 #include <cutils/properties.h>
30 #include <binder/MemoryBase.h>
31 #include <binder/MemoryHeapBase.h>
32 #include <binder/IPCThreadState.h>
33 #include <binder/IServiceManager.h>
34 #include <media/IMediaHTTPService.h>
35 #include <media/MediaMetadataRetrieverInterface.h>
36 #include <media/MediaPlayerInterface.h>
37 #include <media/stagefright/DataSource.h>
38 #include <media/stagefright/Utils.h>
39 #include <private/media/VideoFrame.h>
40 #include "MetadataRetrieverClient.h"
41 #include "StagefrightMetadataRetriever.h"
42 #include "MediaPlayerFactory.h"
43
44 namespace android {
45
MetadataRetrieverClient(pid_t pid)46 MetadataRetrieverClient::MetadataRetrieverClient(pid_t pid)
47 {
48 ALOGV("MetadataRetrieverClient constructor pid(%d)", pid);
49 mPid = pid;
50 mThumbnail = NULL;
51 mAlbumArt = NULL;
52 mRetriever = NULL;
53 }
54
~MetadataRetrieverClient()55 MetadataRetrieverClient::~MetadataRetrieverClient()
56 {
57 ALOGV("MetadataRetrieverClient destructor");
58 disconnect();
59 }
60
dump(int fd,const Vector<String16> &)61 status_t MetadataRetrieverClient::dump(int fd, const Vector<String16>& /*args*/)
62 {
63 const size_t SIZE = 256;
64 char buffer[SIZE];
65 String8 result;
66 result.append(" MetadataRetrieverClient\n");
67 snprintf(buffer, 255, " pid(%d)\n", mPid);
68 result.append(buffer);
69 write(fd, result.string(), result.size());
70 write(fd, "\n", 1);
71 return NO_ERROR;
72 }
73
disconnect()74 void MetadataRetrieverClient::disconnect()
75 {
76 ALOGV("disconnect from pid %d", mPid);
77 Mutex::Autolock lock(mLock);
78 mRetriever.clear();
79 mThumbnail.clear();
80 mAlbumArt.clear();
81 IPCThreadState::self()->flushCommands();
82 }
83
createRetriever(player_type playerType)84 static sp<MediaMetadataRetrieverBase> createRetriever(player_type playerType)
85 {
86 sp<MediaMetadataRetrieverBase> p;
87 switch (playerType) {
88 case STAGEFRIGHT_PLAYER:
89 case NU_PLAYER:
90 {
91 p = new StagefrightMetadataRetriever;
92 break;
93 }
94 default:
95 // TODO:
96 // support for TEST_PLAYER
97 ALOGE("player type %d is not supported", playerType);
98 break;
99 }
100 if (p == NULL) {
101 ALOGE("failed to create a retriever object");
102 }
103 return p;
104 }
105
setDataSource(const sp<IMediaHTTPService> & httpService,const char * url,const KeyedVector<String8,String8> * headers)106 status_t MetadataRetrieverClient::setDataSource(
107 const sp<IMediaHTTPService> &httpService,
108 const char *url,
109 const KeyedVector<String8, String8> *headers)
110 {
111 ALOGV("setDataSource(%s)", url);
112 Mutex::Autolock lock(mLock);
113 if (url == NULL) {
114 return UNKNOWN_ERROR;
115 }
116
117 // When asking the MediaPlayerFactory subsystem to choose a media player for
118 // a given URL, a pointer to an outer IMediaPlayer can be passed to the
119 // factory system to be taken into consideration along with the URL. In the
120 // case of choosing an instance of a MediaPlayerBase for a
121 // MetadataRetrieverClient, there is no outer IMediaPlayer which will
122 // eventually encapsulate the result of this selection. In this case, just
123 // pass NULL to getPlayerType to indicate that there is no outer
124 // IMediaPlayer to consider during selection.
125 player_type playerType =
126 MediaPlayerFactory::getPlayerType(NULL /* client */, url);
127 ALOGV("player type = %d", playerType);
128 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType);
129 if (p == NULL) return NO_INIT;
130 status_t ret = p->setDataSource(httpService, url, headers);
131 if (ret == NO_ERROR) mRetriever = p;
132 return ret;
133 }
134
setDataSource(int fd,int64_t offset,int64_t length)135 status_t MetadataRetrieverClient::setDataSource(int fd, int64_t offset, int64_t length)
136 {
137 ALOGV("setDataSource fd=%d (%s), offset=%lld, length=%lld",
138 fd, nameForFd(fd).c_str(), (long long) offset, (long long) length);
139 Mutex::Autolock lock(mLock);
140 struct stat sb;
141 int ret = fstat(fd, &sb);
142 if (ret != 0) {
143 ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
144 return BAD_VALUE;
145 }
146 ALOGV("st_dev = %llu", static_cast<unsigned long long>(sb.st_dev));
147 ALOGV("st_mode = %u", sb.st_mode);
148 ALOGV("st_uid = %lu", static_cast<unsigned long>(sb.st_uid));
149 ALOGV("st_gid = %lu", static_cast<unsigned long>(sb.st_gid));
150 ALOGV("st_size = %llu", static_cast<unsigned long long>(sb.st_size));
151
152 if (offset >= sb.st_size) {
153 ALOGE("offset (%lld) bigger than file size (%llu)",
154 (long long)offset, (unsigned long long)sb.st_size);
155 return BAD_VALUE;
156 }
157 if (offset + length > sb.st_size) {
158 length = sb.st_size - offset;
159 ALOGV("calculated length = %lld", (long long)length);
160 }
161
162 player_type playerType =
163 MediaPlayerFactory::getPlayerType(NULL /* client */,
164 fd,
165 offset,
166 length);
167 ALOGV("player type = %d", playerType);
168 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType);
169 if (p == NULL) {
170 return NO_INIT;
171 }
172 status_t status = p->setDataSource(fd, offset, length);
173 if (status == NO_ERROR) mRetriever = p;
174 return status;
175 }
176
setDataSource(const sp<IDataSource> & source)177 status_t MetadataRetrieverClient::setDataSource(
178 const sp<IDataSource>& source)
179 {
180 ALOGV("setDataSource(IDataSource)");
181 Mutex::Autolock lock(mLock);
182
183 sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
184 player_type playerType =
185 MediaPlayerFactory::getPlayerType(NULL /* client */, dataSource);
186 ALOGV("player type = %d", playerType);
187 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType);
188 if (p == NULL) return NO_INIT;
189 status_t ret = p->setDataSource(dataSource);
190 if (ret == NO_ERROR) mRetriever = p;
191 return ret;
192 }
193
194 Mutex MetadataRetrieverClient::sLock;
195
getFrameAtTime(int64_t timeUs,int option)196 sp<IMemory> MetadataRetrieverClient::getFrameAtTime(int64_t timeUs, int option)
197 {
198 ALOGV("getFrameAtTime: time(%lld us) option(%d)", (long long)timeUs, option);
199 Mutex::Autolock lock(mLock);
200 Mutex::Autolock glock(sLock);
201 mThumbnail.clear();
202 if (mRetriever == NULL) {
203 ALOGE("retriever is not initialized");
204 return NULL;
205 }
206 VideoFrame *frame = mRetriever->getFrameAtTime(timeUs, option);
207 if (frame == NULL) {
208 ALOGE("failed to capture a video frame");
209 return NULL;
210 }
211 size_t size = sizeof(VideoFrame) + frame->mSize;
212 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient");
213 if (heap == NULL) {
214 ALOGE("failed to create MemoryDealer");
215 delete frame;
216 return NULL;
217 }
218 mThumbnail = new MemoryBase(heap, 0, size);
219 if (mThumbnail == NULL) {
220 ALOGE("not enough memory for VideoFrame size=%zu", size);
221 delete frame;
222 return NULL;
223 }
224 VideoFrame *frameCopy = static_cast<VideoFrame *>(mThumbnail->pointer());
225 frameCopy->mWidth = frame->mWidth;
226 frameCopy->mHeight = frame->mHeight;
227 frameCopy->mDisplayWidth = frame->mDisplayWidth;
228 frameCopy->mDisplayHeight = frame->mDisplayHeight;
229 frameCopy->mSize = frame->mSize;
230 frameCopy->mRotationAngle = frame->mRotationAngle;
231 ALOGV("rotation: %d", frameCopy->mRotationAngle);
232 frameCopy->mData = (uint8_t *)frameCopy + sizeof(VideoFrame);
233 memcpy(frameCopy->mData, frame->mData, frame->mSize);
234 frameCopy->mData = 0;
235 delete frame; // Fix memory leakage
236 return mThumbnail;
237 }
238
extractAlbumArt()239 sp<IMemory> MetadataRetrieverClient::extractAlbumArt()
240 {
241 ALOGV("extractAlbumArt");
242 Mutex::Autolock lock(mLock);
243 mAlbumArt.clear();
244 if (mRetriever == NULL) {
245 ALOGE("retriever is not initialized");
246 return NULL;
247 }
248 MediaAlbumArt *albumArt = mRetriever->extractAlbumArt();
249 if (albumArt == NULL) {
250 ALOGE("failed to extract an album art");
251 return NULL;
252 }
253 size_t size = sizeof(MediaAlbumArt) + albumArt->size();
254 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient");
255 if (heap == NULL) {
256 ALOGE("failed to create MemoryDealer object");
257 delete albumArt;
258 return NULL;
259 }
260 mAlbumArt = new MemoryBase(heap, 0, size);
261 if (mAlbumArt == NULL) {
262 ALOGE("not enough memory for MediaAlbumArt size=%zu", size);
263 delete albumArt;
264 return NULL;
265 }
266 MediaAlbumArt::init((MediaAlbumArt *) mAlbumArt->pointer(),
267 albumArt->size(), albumArt->data());
268 delete albumArt; // We've taken our copy.
269 return mAlbumArt;
270 }
271
extractMetadata(int keyCode)272 const char* MetadataRetrieverClient::extractMetadata(int keyCode)
273 {
274 ALOGV("extractMetadata");
275 Mutex::Autolock lock(mLock);
276 if (mRetriever == NULL) {
277 ALOGE("retriever is not initialized");
278 return NULL;
279 }
280 return mRetriever->extractMetadata(keyCode);
281 }
282
283 }; // namespace android
284